{"id":44169,"date":"2024-10-23T16:40:47","date_gmt":"2024-10-23T14:40:47","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=article-foret-nature&#038;p=44169"},"modified":"2024-10-23T16:40:47","modified_gmt":"2024-10-23T14:40:47","slug":"des-hetraies-qui-poussent-plus-vite","status":"publish","type":"article-foret-nature","link":"https:\/\/foretnature.be\/en\/article-foret-nature\/des-hetraies-qui-poussent-plus-vite\/","title":{"rendered":"Des h\u00eatraies qui poussent plus vite"},"content":{"rendered":"<p>Depuis plus de vingt ans, les chercheurs ont mis en \u00e9vidence une augmentation de la productivit\u00e9 de nombreux peuplements partout en Europe. Ces hausses de productivit\u00e9 ont eu lieu lors des 150 derni\u00e8res ann\u00e9es. L\u2019INRA et l\u2019ONF ont particuli\u00e8rement d\u00e9crit le ph\u00e9nom\u00e8ne pour le h\u00eatre dans le Nord-Ouest et le Nord-Est de la France. Des \u00e9carts de productivit\u00e9 de plus de 4 m\u00e8tres pour un m\u00eame \u00e2ge, entre jeunes et vieux peuplements, ont \u00e9t\u00e9 mis en avant dans le Nord-Est. Les origines de cette hausse de productivit\u00e9, observ\u00e9e sur toute l\u2019Europe, faut encore d\u00e9bat mais les d\u00e9p\u00f4ts azot\u00e9s semblent rassembler un consensus parmi les scientifiques. Sont \u00e9galement cit\u00e9es comme causes l\u2019\u00e9volution de la concentration en CO\u2082 atmosph\u00e9rique et l\u2019augmentation des temp\u00e9ratures globales. Les cons\u00e9quences physiologiques ne sont pas anodines. La hausse de productivit\u00e9 engendre des besoins accrus en nutriments autre que l\u2019azote. Or la plupart des for\u00eats se trouvent sur sols peu fertiles. Dans les stations les plus pauvres, les besoins suppl\u00e9mentaires en \u00e9l\u00e9ments nutritifs (P, Ca, Mg&#8230;) induits par la hausse de productivit\u00e9 pourraient ne plus \u00eatre satisfaits. Suite \u00e0 des stress climatiques, l\u2019\u00e9tat sanitaire des arbres pourrait ensuite se d\u00e9grader et occasionner une diminution importante de la productivit\u00e9 jusqu\u2019\u00e0 atteindre des niveaux plus bas que ceux qui pr\u00e9valaient avant la hausse. Les auteurs pr\u00e9conisent le m\u00e9lange du h\u00eatre avec d\u2019autres essences moins exigeantes en eau et en nutriments afin de limiter les risques \u00e9cologiques et \u00e9conomiques.<\/p>","protected":false},"excerpt":{"rendered":"<p>Depuis plus de vingt ans, les chercheurs ont mis en \u00e9vidence une augmentation de la productivit\u00e9 de nombreux peuplements partout en Europe. Ces hausses de productivit\u00e9 ont eu lieu lors des 150 derni\u00e8res ann\u00e9es. L\u2019INRA et l\u2019ONF ont particuli\u00e8rement d\u00e9crit le ph\u00e9nom\u00e8ne pour le h\u00eatre dans le Nord-Ouest et le Nord-Est de la France. Des [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[49],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Des h\u00eatraies qui poussent plus vite - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/article-foret-nature\/des-hetraies-qui-poussent-plus-vite\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des h\u00eatraies qui poussent plus vite - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Depuis plus de vingt ans, les chercheurs ont mis en \u00e9vidence une augmentation de la productivit\u00e9 de nombreux peuplements partout en Europe. Ces hausses de productivit\u00e9 ont eu lieu lors des 150 derni\u00e8res ann\u00e9es. L\u2019INRA et l\u2019ONF ont particuli\u00e8rement d\u00e9crit le ph\u00e9nom\u00e8ne pour le h\u00eatre dans le Nord-Ouest et le Nord-Est de la France. 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